| 1 | // SPDX-License-Identifier: GPL-2.0 |
|---|---|
| 2 | /* |
| 3 | * Handling of different ABIs (personalities). |
| 4 | * |
| 5 | * We group personalities into execution domains which have their |
| 6 | * own handlers for kernel entry points, signal mapping, etc... |
| 7 | * |
| 8 | * 2001-05-06 Complete rewrite, Christoph Hellwig (hch@infradead.org) |
| 9 | */ |
| 10 | |
| 11 | #include <linux/init.h> |
| 12 | #include <linux/kernel.h> |
| 13 | #include <linux/kmod.h> |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/personality.h> |
| 16 | #include <linux/proc_fs.h> |
| 17 | #include <linux/sched.h> |
| 18 | #include <linux/seq_file.h> |
| 19 | #include <linux/syscalls.h> |
| 20 | #include <linux/sysctl.h> |
| 21 | #include <linux/types.h> |
| 22 | |
| 23 | #ifdef CONFIG_PROC_FS |
| 24 | static int execdomains_proc_show(struct seq_file *m, void *v) |
| 25 | { |
| 26 | seq_puts(m, s: "0-0\tLinux \t[kernel]\n"); |
| 27 | return 0; |
| 28 | } |
| 29 | |
| 30 | static int __init proc_execdomains_init(void) |
| 31 | { |
| 32 | proc_create_single("execdomains", 0, NULL, execdomains_proc_show); |
| 33 | return 0; |
| 34 | } |
| 35 | module_init(proc_execdomains_init); |
| 36 | #endif |
| 37 | |
| 38 | SYSCALL_DEFINE1(personality, unsigned int, personality) |
| 39 | { |
| 40 | unsigned int old = current->personality; |
| 41 | |
| 42 | if (personality != 0xffffffff) |
| 43 | set_personality(personality); |
| 44 | |
| 45 | return old; |
| 46 | } |
| 47 |